package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberResponseVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * @author : xyq
 * @Description: 处理社交登录请求
 * @date: 2020/7/26/23:41
 */
@Slf4j
@Controller
public class OAuth2Controller {

    @Autowired
    private MemberFeignService memberFeignService;

    /**
     * 社交登录成功回调
     */
    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {
        Map<String, String> map = new HashMap<>();
        map.put("client_id", "2091103009");
        map.put("client_secret", "1e31684fc9a5e9a1b9b1455f06427887");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);

        // 1、根据code换取accessToken
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<>(), new HashMap<>(), map);
        // 2、处理
        if (response.getStatusLine().getStatusCode() == 200) {
            // 获取到了accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);
            //  知道了哪个社交用户
            //  1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
            //  登录或者注册这个社交用户
            R r = memberFeignService.oauthLogin(socialUser);
            if (r.getCode() == 0) {
                MemberResponseVo data = r.getData("data", new TypeReference<MemberResponseVo>() {
                });
                log.info("登录成功，用户信息：{}", data.toString());
                //1、第一次使用session，命令浏览器保存卡号，JSESSIONID这个cookie
                //以后浏览器访问哪个网站就会带上这个网站的cookie
                //TODO 1、默认发的令牌。当前域（解决子域session共享问题）
                //TODO 2、使用JSON的序列化方式来序列化对象到Redis中
                session.setAttribute(AuthServerConstant.LOGIN_USER, data);

                // 2、登陆成功，跳回首页
                return "redirect:http://gulimall.com";
            } else {
                return "redirect:http://auth.gulimall.com/login.html";
            }
        } else {
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
